I bought a Dawn Redwood at the Dallas Bonsai Society annual auction in November 22. Dawn Redwoods are the oldest living tree on earth going back more than 5 million years. They were thought to be extinct until 1940 when they were discovered. They can grow to over 100 ft tall but make great bonsai because they are so hardy. Mine is about 28 years old, standing 30″ tall.  It is extremely root-bound and going to need some work in the spring.